Modelling of the Process of Extrusion of Dry Ice through a Single-Hole Die Using the Smoothed Particle Hydrodynamics (SPH) Method

Wałęsa, Krzysztof; Górecki, Jan; Berdychowski, Maciej; Biszczanik, Aleksandra; Wojtkowiak, Dominik

doi:10.3390/ma15228242

Cited by 8 publications

(7 citation statements)

References 29 publications

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“…cylindrical section was described by means of Drucker-Prager/Cap model, using the parameters obtained from the literature [22]. On the extruded material section inside the die convergent section, elastic-plastic material model was applied with the mechanical parameters consistent with the reported simulations [24].…”

Section: Parameters Of the Extruded Materials Model: A)mentioning

confidence: 99%

“…The dry ice extrusion process comprises compression and extrusion stages [23]. The available literature includes reports of numerical simulation studies of this process [24]. It is worth noting at this point that as it was demonstrated by Wałęsa et al 2023 and the DI compression stress and density fields vary along the Z axis of the compression cavity and the product of this process is not homogenous in terms of density over the cross-section area [24,25].…”

Section: Introductionmentioning

confidence: 98%

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Evaluation of Density Fields of Numerical Analysis Output of Solid Carbon Dioxide Extrusion Process

Górecki¹,

Lindner²,

Wałęsa³

2023

Adv. Sci. Technol. Res. J.

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Efforts to reduce energy consumption and explore alternative energy sources are paramount in production process research. However, a research gap exists regarding the evaluation of density fields in numerical analysis output of solid carbon dioxide (CO 2 ) extrusion. This study aims to address this gap by examining the density fields in the numerical analysis output of the extrusion process for solid CO 2 , commonly known as dry ice. Dry ice, a by-product of ammonia compounds production, requires efficient management due to its high sublimation rate. Ram pressing is a commonly used method for compressing dry ice, but the resulting product often exhibits non-uniform density fields, presenting challenges for process optimization. To bridge this research gap, an algorithm is verified for determining the percentage share of density fields in the numerical simulation results. By comparing simulations using single-and multiple-cavity dies, the algorithm provides valuable insights into the distribution of density within the extruded solid CO 2 . In overcoming the limitations of subjective comparative evaluation, this study offers objective measures for assessing and comparing numerical analysis outputs. The findings contribute to a deeper understanding and optimization of the solid CO 2 extrusion process, facilitating the production of high-density dry ice products with reduced energy consumption. In conclusion, this research not only bridges the research gap in evaluating density fields but also advances the field of solid CO 2 extrusion and waste materials management.

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Section: Parameters Of the Extruded Materials Model: A)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Evaluation of Density Fields of Numerical Analysis Output of Solid Carbon Dioxide Extrusion Process

Górecki¹,

Lindner²,

Wałęsa³

2023

Adv. Sci. Technol. Res. J.

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“…Mathematical models describing the compaction of dry ice have been published in previous studies by the authors of [17,18]. However, during simulation studies, simplification was carried out, assuming that the friction coefficient (µ W ) during DI contact (Figure 1; label 1) with the die cavity working surfaces (Figure 1; label 2) of µ = 0.05 did not change with the changing density of the material being compacted.…”

Section: Introductionmentioning

confidence: 99%

Method for Determining the Coefficient of Friction Variation Pattern as a Function of Density at Low Temperatures Using the Example of Dry Ice–Steel Contact

Górecki,

Łykowski,

Husar

et al. 2024

Materials

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The developments in manufacturing technologies are expected to reduce energy input without compromising product quality. Regarding the material densification process, numerical simulation methods are applied to achieve this goal. In this case, relevant material models are built using functions that describe the variation in mechanical parameters of the material in question due to its deformation. The literature review conducted for this research has revealed a shortage of experimental research methods allowing a determination of the coefficient of friction at low temperatures, approximately 200 K. This article proposes a method for determining the friction coefficient of dry ice sliding against steel. The experimental results were analysed to obtain several functions describing the variation in the coefficient of friction. These functions were then compared using goodness-of-fit indexes. Finally, two functions with similar goodness-of-fit values were chosen. The findings of this research project will complement the already available information and may be used in various research and implementation projects related to the development or improvement of currently used crystallised carbon dioxide conversion processes.

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“…As soon as the ram has reached the end-of-travel position, it is withdrawn to the home position and the cycle begins anew. The process of dry ice production been extensively described in the literature and the interested readers are advised to consult the referenced articles [6] for further details.…”

Section: Introductionmentioning

confidence: 99%

Influence of the Extrusion Cavity Shape on the Ultimate Extrusion Force Value During Pellet Extrusion Through Multiple-Cavity Dies

Górecki,

Łykowski,

Gumeni

2024

Adv. Sci. Technol. Res. J.

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The article describes the results of experimental research that allowed us to compare the influence of the forming channel shape and its length on the limit value of the force occurring in the process of extruding crystallized carbon dioxide using multi-channel dies. To carry out the research, the authors adopted a method described in the literature, which allows for experimenting using a sublimating material under normal conditions, at a temperature of -78.4°C. Analysis of variance was used for the statistical analysis of the experiment results, which allowed to determine the level of statistical significance of differences between individual populations. Additionally, based on the median and regression values, an attempt was made to fit a function describing the change in the tested values as a function of geometric parameters. This allowed for comparison of the impact of individual variables.

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Modelling of the Process of Extrusion of Dry Ice through a Single-Hole Die Using the Smoothed Particle Hydrodynamics (SPH) Method

Cited by 8 publications

References 29 publications

Evaluation of Density Fields of Numerical Analysis Output of Solid Carbon Dioxide Extrusion Process

Evaluation of Density Fields of Numerical Analysis Output of Solid Carbon Dioxide Extrusion Process

Method for Determining the Coefficient of Friction Variation Pattern as a Function of Density at Low Temperatures Using the Example of Dry Ice–Steel Contact

Influence of the Extrusion Cavity Shape on the Ultimate Extrusion Force Value During Pellet Extrusion Through Multiple-Cavity Dies

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